where:
T
Factor to convert selected time base to seconds
N
Number of pulses per flow unit, as configured in the receiving device
The resulting
Frequency Factor
must be within the range of the Frequency Output :
•
If
Frequency Factor
is less than1 Hz, reconfigure the receiving device for a higher pulses/unit setting.
Configure Frequency=Flow
You want the Frequency Output to report all flow rates up to 2000 kg/min.
The frequency receiving device is configured for 10 pulses/kg.
Solution:
FrequencyFactor RateFactor
T
× N
FrequencyFactor 2000
60 × 10
FrequencyFactor = 333.33
Set parameters as follows:
•
Rate Factor
:
2000
•
Frequency Factor
:
333.33
8.4.3 Configure Frequency Output Direction
Display
Menu
>
Configuration
>
Inputs/Outputs
>
Channel x
>
I/O Settings
>
Direction
ProLink III
Device Tools
>
Configuration
>
I/O
>
Outputs
>
Frequency Output x
>
Direction
Field Communicator
Configure
>
Manual Setup
>
Inputs/Outputs
>
Channel
x
>
Frequency Output
x
>
FO
x
Settings
Frequency Output Direction
controls how conditions of forward flow and reverse flow affect the flow rates
reported by the Frequency Output.
Actual flow direction interacts with
Sensor Flow Direction Arrow
to determine the flow direction that the
transmitter uses in processing. See the following table.
Table 8-2: Interaction between actual flow direction and Sensor Flow Direction Arrow
Actual flow direction
Setting of Sensor Flow Direction
Arrow
Flow direction sent to outputs and
totalizers
Forward (same direction as Flow arrow
on sensor)
With Arrow
Forward
Against Arrow
Reverse
Reverse (opposite from Flow arrow on
sensor)
With Arrow
Reverse
Against Arrow
Forward
Integrate the meter with the control system
Configuration and Use Manual
March 2019
MMI-20025166
152
Micro Motion Model 5700 Transmitters with Configurable Outputs